Browsing by Author "Yilmaz,M."

Now showing 1 - 6 of 6

Citation Count: 0
Car and renewable energy storage accumulators active life extension for hazardous wastes eco-impact minimization
(2010) Ustun,O.; Yilmaz,M.; Ali-Zada,P.; Tuncay,R.N.; Mamadov,H.
The chemical nature of an accumulator battery is likely to defeat the ability to charge. Traumatic damage is being caused to the environment by the accumulator waste-pollutants: sulfuric acid and lead from the accumulators. Similar problems arise with different types of accumulators (NiCd, NiMH, Li-ion, Li-Polymer, etc.) This leakage seeps into waterways, soil and the air of the living beings, animals, birds and humans, especially to children. The paper outlines an examination of a cheap and smart experimental charging-discharging device, which helps getting a significant extension of the active life of car and renewable energy storage accumulators, as well as known methods, therefore minimizing the environmental impact of batteries wastes. Having known the limiting crystallization, it is possible to extend the battery active life cycles more than three times, provide a remediation of these environmental polluting effects and diminish the environmental impact of accumulator hazardous wastes on living organisms. © Copyright 2011 IEEE - All Rights Reserved.
Citation Count: 32
Design and implementation of an electric drive system for in-wheel motor electric vehicle applications
(2011) Tuncay,R.N.; Gökçe, Can; Yilmaz,M.; Gokce,C.; Karakaya,U.; Otomotiv Mühendisliği / Automotive Engineering
This paper presents the design and application of a hub drive system for Hybrid (HEV) and All Electric Vehicles (EV). Initially Matlab SIMULINK model of a hub driven hybrid electric vehicle is developed and the performance values are calculated. Two 15 kW brushless dc machines (BLDC) are designed and manufactured to be located inside the rim of the wheels. The performance tests of these wheels are conducted in laboratory environment. Then, two separately driven rear wheels are mounted to Fiat Linea vehicle. The mechanical differential is replaced by an electronic control technique, which bases upon the detection of the angle of steering wheel. A CAN bus communication is established between the control system of electric drive and Electronic Control Unit (ECU) of the vehicle. The concerted action between electrically driven rear-wheels and Internal Combustion Engine (ICE) driven front axle is achieved. Finally some preliminary road tests are executed and encouraging test results are obtained. The design optimizations between ICE, Electric Drive and Battery Power for various drive cycles are investigated. © 2011 IEEE.
Citation Count: 0
DYNAMIC INSTRUMENTATION OF THE THORACIC SPINE
(Galenos Publishing House, 2020) Öǧrenci,A.; Akar,E.; Koban,O.; Yaman,O.; Yilmaz,M.; Dalbayrak,S.
The aim of this report was to present a new surgical alternative for pathologies affecting the thoracic spine, and to also share our experience of treating such cases using dynamic systems. Two patients exhibiting thoracic spine pathologies (traumatic disc herniation and thoracic stenosis) that did not necessarily require surgery using rigid systems were selected for stabilization using the dynamic system. The patients exhibited a decrease in postoperative visual analog scale scores, and the follow-up period remained uneventful. The results of this report suggest that dynamic systems can be used as an alternative to rigid systems for treatment of thoracic spine pathologies. © 2020 Journal of Turkish Spinal Surgery. All rights reserved.
Citation Count: 0
A LESS INVASIVE APPROACH IN ISTHMIC SPONDYLOLISTHESIS: SPINO-SEMILAMINA-FACET SPARING TECHNIQUE
(Galenos Publishing House, 2020) Koban,O.; Öǧrenci,A.; Yilmaz,M.; Dalbayrak,S.
Objective: Our study aimed to describe the Spino-Semilamina-Facet Sparing Technique for the surgical treatment of patients with isthmic spondylolisthesis and to present our clinical results. Materials and Methods: Forty-four patients who were treated with the above-mentioned technique between 2013 and 2015 were retrospectively evaluated. We included patients with grade 1 isthmic listhesis on neutral lumbar X-rays, who usually had a dominant unilateral radicular pain, but did not require discectomy via the approach side. The 12th month low back pain visual analogue scale (VAS) scores, leg pain VAS scores and Oswestry Disability index (ODI) scores were analysed both preoperatively and postoperatively. Results: The average age of the patients was 46.3 years. Significant improvements were observed in the patients' radicular VAS scores at the approached side 12 months after the surgery (p<0.0001). There were also statistically significant improvements in minor radicular complaints when decompression was performed from the contralateral side compared to when it was done on the approached side (p<0.0001). Significant improvements were observed when ODI and low back pain VAS scores were compared between the preoperative and postoperative periods (p<0.0001, p<0.0001, respectively). To date, no additional intervention was applied to any patient. Conclusion: The technique described in our study provides less invasive principles. The biggest advantages are that there is no need to perform a total laminectomy and the clinical outcomes are favourable. © 2020 Journal of Turkish Spinal Surgery. All rights reserved.
Citation Count: 0
The search for adaptive methods filtering out high-noises and their application on oil complexes' control telemetry systems
(2013) Yilmaz,M.; Ustun,O.; Ali Zada,P.; Tuncay,R.N.
This paper's domain is the application of well-known modern applied mathematical methods in a control structure of oil industry. Electrical Submersible Pumps (ESP) telemetry system allows for the obtaining of information in the neighborhood of different heavy electromagnetic noises. The telemetry system needs to receive accurate information on the pump unit's intake pressure, temperature and most importantly for the submersible electric motor, the stator cooling oil insulation resistance, for the successful exploitation of the ESP. But increasing disturbance levels with the corrupted analog telemetry signal are resulting in increasing noise levels; however, often it is still audible or the control is still reliable. Though, beyond a certain disturbance level, the so-called digital cliff, the digital telemetry signal and control may stop abruptly (Fig. 1). In this paper, an analog signal processing implementation was researched for the detection of the most efficient adaptive noise-cancelling filters among dozens of recognized ones for oil industry ESP telemetry systems of under severely noisy conditions. From ten applied adaptive filter algorithms, only three have shown successfully good results in the early prediction of the ESP electric motor real insulation disruption. © 2013 IEEE.
Citation Count: 0
Valuations of adaptive methods for filtering out high-noises in oil complexes telemetry systems
(IEEE Computer Society, 2013) Ustun,O.; Yilmaz,M.; Mamedov,H.; Zada,P.A.; Tuncay,R.N.
The ESP telemetry system needs to receive accurate information on the pump unit's intake pressure, temperature and most importantly the electric motor stator cooling oil insulation resistance, for the successful exploitation of the ESP. The increasing disturbance levels with the corrupted analog telemetry signal are resulting in increasing noise levels; however, often it is still audible or the control system is still reliable. Beyond a certain disturbance level - digital cliff, the digital telemetry signal and control may stop abruptly. From ten applied adaptive filter algorithms, only three have shown successfully good results in the early prediction of the ESP electric motor real insulation disruption. © 2013 IEEE.